Wrench.



JOHN C. IMGLEAN, 0F CLEVELAND, OHIO.

WRENCH.

Specification of Letters Patent.

Application filed April 15, 1910.

Patented Mar. 7, 1911.

Serial No. 555,587.

To all whom may concern:

Be it known that 1, JOHN C. MoLnAN, a citizen of the United States,residing at Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented new and useful Improvements in renches, of which the followingis a specification.

This invention relates to improvements in wrenches and more particularlyto that type of wrenches known as sliding aw or monkey wrenches.

One object of the invention is the provision of an adjusting nut for thesliding jaw of a monkey wrench orthe like, having one of its facesroughened, and a slide to engage with said roughened surface and lockthe same against movement, whereby movement of the jaws after adjustmentby the nut will be positively prevented.

Another objectis the provision of a wrench proviced with a rotatablehandle having connection with the slide for locking the adjusting nutand adapted when turned in one direction to advance the slide intoengagement with the adjusting nut.

With these and other objects in view, which will more fully hereinafterappear, the present invention consists in certain novel details ofconstruction and arrangement of parts, hereinafter fully described,illustrated in the accompanying drawings, and more particularly pointedout in the appended claims; it being understood that various changes inthe form, proportion, size, and minor details of the device may be made,within the scope of the appended claims, without departing from thespirit or sacrificing any of the advantages of the invention.

In the accompanying drawings, forming a part of the specification;Figure 1 is a side elevation of a monkey wrench showing my improvedlock applied thereto. Fig. 2 is a view similar to Fig. 1 but showing thehandle, slide and adjusting nut in longitudinal section.

Similar numerals of reference are employed to designate correspondingparts throughout.

The stationary member is shown to include a shank portion designated bythe numeral 5, one end of which terminates in the usual gripping jaw 6,while the opposite end portion of which is rounded from a point adjacentthe middle of the shank, as shown at 7 and terminates in a reducedexteriorly the shank 5.

threaded boss 8. As shown in Fig. 2 the portion of the shank 5 betweenthe middle thereof and the rounded portion 7 is offset as at 9 toprovide a shoulder 10, the portion 9 being non-cylindrical in crosssection. Formed on that side of the shank opposite to the shoulder 10 isa transverse recess 16, one end of which is in alinement with theshoulder 10.

The movable member is shown to include a short shank portion designatedby the numeral 11. one end of which terminates in a gripping jaw 12 theinner end of said gripping jaw having a loop to receive the shank 5, andthe opposite end of the shank being provided with a loop or collar 13 toreceive The shank 11 is hollow and interiorly screw-threaded to receivethe adjusting screw 14-. .hreaded into the shank 11 is one end of anadjusting screw 14:, and fixedly secured to the opposite end portion ofthe said adjusting screw is an adjusting nut 15, a portion of which isseated in the recess 16.

Slidingly fitted on the offset portion 9 is a slide 17. This member isin the form of a sleeve having a non-cylindrical bore to receive theportion 9 and is provided on one side and at one end with an offstandingportion 18, one face of which is in a plane with one end of the sleeveand is provided with a socket to receive the opposite end of theadjusting screw 1-1. The face of the offstanding portion 18 providedwith the socket, is

serrated and the adjacent face of the ad justing nut 15 is serrated,these said serrations when locked operating to prevent movement of theadjusting nut. The opposite end portion of the slide 17 is substantiallycircular in contour and is provided with a screw threaded counter-bore19, the purpose of which will presently appear.

The handle is designated by the numeral 20 and is provided with acircular bore to loosely receive the rounded end 7 of the shank. Thehandle is somewhat less in length than the length of the shank andthreaded onto the boss 8 of the latter is a nut 21 serving to preventdisplacement of the handle. The inner end of the handle or that adjacentto the slide 17 is provided with an exteriorly threaded collar 22somewhat less in diameter than the diameter of the handle and of a sizeto be received by the threaded counterbore 19 of the slide. It mighthere be stated that when the handle is secured on the rounded portion 7in the manner just described and the serrations of the slide inengagement with those of the adjusting nut and the screw-threaded collarengaged by the screw threads on the counterbore 19 that a space willexist between the inner end of the handle and adjacent end of the slide,so that by turning the handle in one direction the slide 17 will movetoward the handle 20, whereby the serrated surface of the slide will bemoved from engagement with the serrations of the nut 15, whereupon itwill be possible to adjust the jaws G and 12 to the desired position toengage the ob ject to be operated upon, after which by turning thehandle in the opposite direction it will move the serrated surface ofthe slide into engagement with the serrated surface of the nut 15,whereby turning movement of the nut and consequent movement of themovable member will be positively prevented.

I claim 1. In a wrench the combination with a stationary and movablemember, of an adjusting nut connected to the movable member and having aroughened surface, a slide arranged on the stationary member andprovided with a roughened surface and a handle rotatably mounted on thestationary member and connected to the slide and adapted when turned inone direction to move the roughened surface of the slide into bindingengagement with the roughened surface of the adjusting nut, for thepurposes described.

2. In a wrench the combination with a stationary and movable member; ofan adjusting nut connected to the movable member and having one facethereof serrated a slide arranged on the stationary member below thenut, a handle rotatably mounted on the stationary member having one endportion threaded into the slide and adapted when turned to move theslide into and out of engagement with the serrated surface of the nut.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN C. lWIoLEAN.

\Vitnesses Gnoncn T. Fox, MINNA 0. FOX.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Paten Washington, D. G.

